Street-illuminating lamp.



E. S. NEWBOLD.

STREET ILLUMINATING LAMP. APPLICATION FILED novjo, 1911.

Patented Feb. 10, 1914.

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o. WASH E. S. NEWBOLD.

STREET ILLUMINATING LAMP.

APPLICATION FILED NOV. 9, 1911.

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STREET ILLUMINATING LAMP.

APPLICATION FILED NOV. 9,1911.

Patented Feb. 10, 1914.

4 SHEETS-SHEET 3.

B. S. NEWBOLD.

STREET ILLUMINATING LAMP.

11221110111011 TILED 11017.9, 1911.

1,087,048, Patented Feb. 10, 19M

Elm/1mm emm (/rw flaw COLUMBIA PLANOGRAPH 60., WASHINGTON. 0, c.

TTED STATES PATENT OFFICE.

EUGENE S. NEWBOLD, OF BALTIMORE, MARYLAND, ASSIGNOR TO AMERICAN STREET LIGHTING COIJIPANY, OF BALTIMORE, MARYLAND, A CORPORATION OF IIIARYLAND.

STREET-ILLUlVIINATING LAMP.

Application filed November 9, 1911.

T 0 all whom it may concern:

Be it known that I, EUGENE S. NEWBOLD, a citizen of the United States, residing in the city of Baltimore, State of Maryland, and whose post-oflice address is 831 Greenmcunt avenue, in said city of Baltimore, have invented certain new and useful Improvements in Street-Illuminating Lamps, of which the following is a specification.

This invention relates to lamps for illuminating relatively large areas, such as streets or public places, and it has for its object to provide a lamp of great efficiency, relia bility, and durability and one which will be particularly well adapted for the uses stated and will be subject to convenient control.

The invention consists in certain novel features in the construction and relation of parts, the general nature as well as the specific character of which will be hereinafter fully described and particularly pointed out in the claims.

In the accompanying drawings, Figures 1 and 2 represent the lamp in side and front elevation; Fig. 3 is a vertical section of the same; Fig. 1- is a top plan view with the crown and hood removed, and showing the double burner arrangement; Fig. 5 is a detail view corresponding to Fig. 4, showing a single burner arrangement; Fig. 6 is a horizontal section on the line VI-VI, Figs. 1, 2, 3 and 7, on an enlarged scale, and showing parts disclosed in Fig. 4, and Fig. 7 is a vertical section on the line VIT VII, Fig. 4:, with the burners shown in elevation. Fig. 8 is a top plan view of the cap or ventilator.

The support for the lamp comprises a bracket 1 preferably fitted to socket member 2, which may be in the form of a capital or head for a lamp post through which a gaseous or other fuel feed pipe 3 may extend. Pipe 3 may be threaded at 4: into the bracket 1 and thus become the means for securing the bracket against displacement. The bracket is preferably in the form of an ornamental casting having a single upright 5 and cast wholly so as to form in part the fuel conduit. It may be provided with a removable plug 6 through which to supply alcohol or other thawing or water evaporating medium. The upright 5 terminates in a frame 7 which may be formed with an ornamental outer guard flange 8 and an inner supporting flange 9, upon which latter is mounted a dome 10 and a crown 11. Be-

Speeifieation of Letters Patent.

Patented Feb. 10,1914.

Serial No. 659,439.

neath the frame 7 is arranged a globe rim 12 (see Fig. 7) hinged at 13 to the frame 7 and provided with a retaining button 1% at a point diametrically opposite the hinge, whereby the globe rim is held firmly to its seat within the flange 15 on the under face of the supporting frame 7. An internal flange 16 on the globe rim 12 receives the globe 17 of transparent or translucent material. The relation of the hinge 13 to the up right 5 is such that the globe may be swung down and back to a position which permits its removal or replacement in the globe rim.

18 represents a collar surrounding the reduced lower opening of the globe, to which it is held by a set screw 19 and upon which is hinged a closure disk 20, which may be held in closed position by gravity catch 21.

The frame 7 is supported on the upright 5 through the medium of the circumferentially expanded web 22 which, in addition to being designed to add to the esthetic features of the lamp, serves the practical purpose of providing an effective shield to the burner or burners, on that side of the lamp so that when the lamp is used on streets and is placed with the upright 5 toward the adjacent buildings, the disagreeable feature of the brilliant light at close range will be entirely relieved without interfering with the illumination of the street service and permitting unobstructed emission of light in all other directions.

The'fuel conduit within the bracket 1 preferably terminates at 23 at the lower end of the bracing and shielding web 22 and is there adapted to receive an uptake pipe 24 removably held by the set screw 25 and carrying at its upper end the burner cook 26, which lies between the flanges 8 and 9 and extends inwardly through the flange 9 where it is provided with the Bunsen or air mixing device 27 which terminates in a nozzle 28.

The cock 26 carries a ground plug valve 29 having a tubular valve stem 30 which is under control of a lever 31, and said valve, in addition to its transverse port 32 and longitudinal bore 33, through which the main gas supply flows into the hollow end 34; of the shell of the cock 26, has a cireumferential by-pass 35 adapted to communicate between the uptake 21 and the pilot channel 86 which is under control of needle valve 37 and discharges into the pilot tube 38. lVhile the main flow of gas is cut off or turned on by the plug 29 and the by-pass 35 is opened to the pilot feed each time the plug 29 is closed, the regulation of gas supplied to the feed pipe 2-8 is determined by a needle valve 39, which has its seat 40 in the forward end of the shell 26 and which needle valve while extending axially through the plug valve 29, and threaded in the valve stem 30, maintains its relation to the seat 40, notwithstanding the opening and closing of the valve 29.

41 represents a spring impinging at one end against a shoulder on the valve 29 and at its opposite end against the sleeve -12 threaded upon the shell 26, so as to hold the valve 29 tight. Shell 26 carries an arm 43 in which is threaded the adjusting screw 44 of the air regulating sleeve 45 of the Bunsen 27; screw 44 being connected to said sleeve through an arm -16 in which the screw is likewise threaded, though oppositely to its threading in the arm 43, so that a given rotation of the screw 44 amplifies the movement in the sleeve 45.

The mixture discharged by the tube 28 passes into a burner feed tube 47, which slips over the tube 28 for convenience in assembling and disassembling. Tube 47 may lead directly to a single burner 48, as suggested in Fig. 5, in which event the pilot 38 will likewise be single and will extend downwardly alongside of said burner 48; or the tube 47 may feed a pair of burners 48 as suggested in other figures of the drawings, for which purpose tube 47 will discharge into the intermediate storing and distributing chamber 49, preferably in the form of a sphere, from which lead the burner tubes 50 on either side thereof and in symmetrical relation to the tube 47. By the introduction of this intermediate chamber 49, a uniform feed is insured to the two burners 48 which cannot be readily obtained where the tube 47 is connected to the tubes 50 by an ordinary T-joint. In the double form of burner, the pilot 38 is likewise provided with double pilot burners 51 terminating in igniting relation to the respective burners 48, and to insure eflicient action of the pilots 51, their feed tube 38 is connected to them through the medium of the intermediate storing and distributing chamber 52.

The length of the tubes 50, as will be seen from Fig. 7, is such as to bring the burners 48 in proper relation to the shielding web 22, for the purpose of preventing the glare of the lightimmediately against adjacent buildings, yet in such relation thereto as to not interfere with illui'ninating the entire surface around the lamp post and emitting the light without obstruction up and down the street and out toward the roadway, and in this connection it will be observed that the burners 48 are sufliciently spaced apart so that each burner will illuminate the shadow of the lamp post from the other burner.

For initial lighting, the closure 20 at the bottom of the globe will be opened to admit a lighter, but thereafter the pilot lights are ignited whenever the main flow is cut off and remain burning until the main valve is again opened and this manipulation is elfec ed through the lever 81.

represents a shield carried by the burner cock for the purpose of cutting oil draft through the opening in the flange 9, through which the burner cock passes.

A lamp constructed as above described, in addition to effecting all -of the purposes stated. is thoroughly protected from water and disturbing drafts.

If desired and where necessary to comply with municipal requirements, a governor of any suitable known form may be introduced between the gas-cock and the Bunsen or mixer.

I claim 1. In a lamp, the combination with a hollow bracket, of a light shield mounted thereon, a globe sustaining frame supported from the top of said shield, a fuel pipe passing through said shield and communicating with the hollow bracket and also communicating with a burner located atone side of said shield.

2. In a lamp, the combination with the globe supporting frame, of a circumferentially expanded web providing an effective light shield at one side of the burner of said lamp and serving a support for said frame and globe carried thereby.

The foregoing specification signed at lVashington, D. 6., this 25 day of Sept,

EUGENE S. NEWBOLD. in presence of* Hnnvnr S. KNIGHT, EDWIN S. CLARKSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). C. 

